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    • 1. 发明申请
    • Method for manufacturing a cell transistor of a semiconductor memory device
    • 半导体存储器件的单元晶体管的制造方法
    • US20060141716A1
    • 2006-06-29
    • US11150026
    • 2005-06-10
    • Kyoung-Bong RouhSeung JinMin Lee
    • Kyoung-Bong RouhSeung JinMin Lee
    • H01L21/336
    • H01L29/66575H01L27/10873H01L29/66492
    • Disclosed is a method for manufacturing a cell transistor of a semiconductor memory device. The method comprises the steps of: forming device isolation films and a well on a semiconductor substrate; forming a threshold voltage adjust region by ion-implanting a first conductive impurity dopant into the well of the semiconductor substrate; performing a first thermal annealing on the semiconductor substrate where the threshold voltage adjust region is formed; forming a gate insulating film and gate electrodes on top of the semiconductor substrate between the device isolation films; forming a halo ion implantation region by ion-implanting a first conductive impurity dopant into the semiconductor substrate corresponding to a drain region exposed by the gate electrodes; performing a second thermal annealing on the semiconductor substrate where the halo ion implantation region is formed; and forming source/drain regions by ion-implanting a second conductive impurity dopant into the semiconductor substrate exposed by the gate electrodes. This method can reduce the turn-off leakage current of the cell transistor since the dopant dose of the threshold voltage adjust region can be reduced while maintaining the threshold voltage by increasing the dopant diffusion of the threshold voltage adjust region.
    • 公开了半导体存储器件的单元晶体管的制造方法。 该方法包括以下步骤:在半导体衬底上形成器件隔离膜和阱; 通过将第一导电杂质掺杂剂离子注入到所述半导体衬底的阱中来形成阈值电压调整区域; 在形成有阈值电压调整区域的半导体衬底上进行第一热退火; 在半导体衬底的顶部在器件隔离膜之间形成栅极绝缘膜和栅电极; 通过将第一导电杂质掺杂剂离子注入对应于由栅电极暴露的漏区的半导体衬底中形成晕圈离子注入区; 在形成有所述卤素离子注入区域的所述半导体衬底上进行第二热退火; 以及通过将第二导电杂质掺杂剂离子注入到由所述栅电极暴露的所述半导体衬底中来形成源/漏区。 该方法可以减小单元晶体管的截止漏电流,因为阈值电压调整区域的掺杂剂剂量可以通过增加阈值电压调整区域的掺杂剂扩散来维持阈值电压而降低。
    • 9. 发明申请
    • Detachable dustproof filtering device
    • 可拆卸防尘过滤装置
    • US20080016834A1
    • 2008-01-24
    • US11488658
    • 2006-07-19
    • Min Lee
    • Min Lee
    • B01D50/00
    • B01D46/10B01D2279/45
    • A detachable dustproof filtering device for network chassis is disclosed. The detachable dustproof filtering device includes a detachable filter cover and a filter. The filter cover is a sheet that breaths and its shape is designed according to the shape of the air inlet of the network chassis. By a connecting member, the filter cover is covered on outside of the air inlet while the filter is disposed on inner surface of the detachable filter cover, covering the air inlet completely. Air drawn by a fan passes through the filter first and then enters inner space of the chassis so that space inside the chassis keeps clean even being used for quite a long time.
    • 公开了一种用于网络机箱的可拆卸防尘过滤装置。 可拆卸的防尘过滤装置包括可拆卸的过滤器盖和过滤器。 过滤器盖是呼吸的片材,其形状根据网络底盘的进气口的形状设计。 通过连接构件,过滤器盖被覆盖在进气口的外侧,同时过滤器设置在可拆卸过滤器盖的内表面上,完全覆盖进气口。 由风扇抽出的空气首先通过过滤器,然后进入机箱的内部空间,使得机箱内的空间即使长时间使用也保持干净。